Yeah, copper going up slightly was a little strange and as for the Si, yes I was driving on
the beach almost every weekend over the summer. I thought it would drop since I switched back to OEM. It'll probably go down next sample.
I actually did think that I had an exhaust leak when I was running the Amsoil filter, but the dealer said it was just noisy from the filter. No EGT.
I only checked my oil about three times during the interval.
There are a couple of STi UOA's on bitog. One very good one even included 45 passes at the drag strip.